Use the multiprocessing module of core python to create child processes
instead of using threads. Its API is very similar to threading. I've had
success doing this. If you need examples, let me know.
On Dec 13, 2012 7:13 AM, "Agustin Casiva" <[email protected]> wrote:
> Hi Folks, I wanna know if is possible execute fabric commands (run,
> exists, etc) over the same server in a different thread or different
> process.
>
> I have to run several commands in different folders over the same server
> and I need to execute this commands in parallel.
>
> I tried with Threads but I'm getting SSH errors in the threads. Errors
> like these
>
> Exception in thread Thread-32:
> Traceback (most recent call last):
> File "/app/data/software/lib/python2.7/threading.py", line 551, in
> __bootstrap_inner
> self.run()
> File "/app/data/software/lib/python2.7/threading.py", line 504, in run
> self.__target(*self.__args, **self.__kwargs)
> File "/app/scripts/fabric/nyx/deploy/deploy_base.py", line 252, in
> doRunParallelCommands
> if exists('%s/settings.php' % site_info['site_path']):
> File
> "/app/data/software/lib/python2.7/site-packages/fabric/contrib/files.py",
> line 35, in exists
> return not func(cmd).failed
> File "/app/data/software/lib/python2.7/site-packages/fabric/network.py",
> line 463, in host_prompting_wrapper
> return func(*args, **kwargs)
> File
> "/app/data/software/lib/python2.7/site-packages/fabric/operations.py", line
> 909, in run
> return _run_command(command, shell, pty, combine_stderr)
> File
> "/app/data/software/lib/python2.7/site-packages/fabric/operations.py", line
> 819, in _run_command
> stdout, stderr, status = _execute(default_channel(), wrapped_command,
> pty,
> File "/app/data/software/lib/python2.7/site-packages/fabric/state.py",
> line 340, in default_channel
> chan = connections[env.host_string].get_transport().open_session()
> File "/app/data/software/lib/python2.7/site-packages/ssh/transport.py",
> line 660, in open_session
> return self.open_channel('session')
> File "/app/data/software/lib/python2.7/site-packages/ssh/transport.py",
> line 771, in open_channel
> raise e
> SSHException: Unable to open channel.
>
> Or
>
> Exception in thread Thread-50:
> Traceback (most recent call last):
> File "/app/data/software/lib/python2.7/threading.py", line 551, in
> __bootstrap_inner
> self.run()
> File "/app/data/software/lib/python2.7/threading.py", line 504, in run
> self.__target(*self.__args, **self.__kwargs)
> File "/app/scripts/fabric/nyx/deploy/deploy_base.py", line 252, in
> doRunParallelCommands
> if exists('%s/settings.php' % site_info['site_path']):
> File
> "/app/data/software/lib/python2.7/site-packages/fabric/contrib/files.py",
> line 35, in exists
> return not func(cmd).failed
> File "/app/data/software/lib/python2.7/site-packages/fabric/network.py",
> line 463, in host_prompting_wrapper
> return func(*args, **kwargs)
> File
> "/app/data/software/lib/python2.7/site-packages/fabric/operations.py", line
> 909, in run
> return _run_command(command, shell, pty, combine_stderr)
> File
> "/app/data/software/lib/python2.7/site-packages/fabric/operations.py", line
> 819, in _run_command
> stdout, stderr, status = _execute(default_channel(), wrapped_command,
> pty,
> File "/app/data/software/lib/python2.7/site-packages/fabric/state.py",
> line 340, in default_channel
> chan = connections[env.host_string].get_transport().open_session()
> File "/app/data/software/lib/python2.7/site-packages/ssh/transport.py",
> line 660, in open_session
> return self.open_channel('session')
> File "/app/data/software/lib/python2.7/site-packages/ssh/transport.py",
> line 771, in open_channel
> raise e
> ChannelException: Administratively prohibited
>
> Thoughts ?
>
> Thanks in Advance
>
> --
> Ing. Casiva Agustin
>
> Mail/Msn/GTalk/Jabber: [email protected]
> Skype: casivaagustin
> CEL : 054-0364-154270639
> Site: http://www.casivaagustin.com.ar
>
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>
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